Apparatus for preparing rings for ball-bearings.



PATENTED NOV. 6, I906.

S. SCHNEIDER. APPARATUS FOR PREPARING RINGS FOR BALL BEARINGS.

APPLIOATION FILED JULY 10. 1905.

2 SHEETS-SHEET 1.

Wi'mzssss:

v No. 835,328.

S. SCHNEIDER.

APPARATUS FOR PREPARING RINGS FOR BALL BEARINGS.

APPLICATION rum) JULY 10. 1905.

PATENTED NOV. 6, 1906- B SEEBTSSHEET z.

ATTCIRNEVE.

UNITED STATES PATENT OFFICE STEFAN sonnninns, or cn A L'orTENBuno,GERMANY APPARATU$ eon PREPARENG nines FOR'BALL-BEARINGS...

Specification of Letters Patent.

Application filed July 10, 1906. Serial No. 269,011.

To all whom it may concern.-

Be it known that I, STEFAN SCHNEIDER, a subject of the German Emperor, and a resident of Charlottenburg, Germany, have invented a certain new and usefu Improvement in Apparatus for Preparing Rings for Ball-Bearings, of which the following is a specification.

This invention relates to apparatus for preparing rings for ball-bearings.

in the specification of my copending application for netters Patent, Serial N 0. 269,010, l have described a method of preparing such rings wherein preparatory to the rolling out of the rings the same are subjected to a hammeri'ng operation in a radial direction, so as to remove the internal stresses in the no s.

The present invention consists in a rolling apparatus for rolling out the rin s subsequent to the hammering operation an is illustrated in the accompanying drawings, in which- Figure 1 is a plan of the rolling apparatus;

' Fig. 2, a section along the line A B of Fig. 1.

As in previously-known rolling apparatus the material to be rolled is placed betweenseveral external rolls and one internal roll. In order that the external rolls may be simultaneously and uniformly adjusted in radial direction, the are arranged on a surface plate provide on its front face With a spiral thread, so that on rotation of, the plate the su )ports, each of which carries one external r0 1, are moved radially in slots in a disk. Such an arrangement, reviously used for quite distinct pur oses, as proved particularly valuable n t e rolling out of ball-bearing rings, which require uniform treatment. The adjustment ofthe internal roll is obtained by mounting that part of the drivin shai't for the internal roll in an eccentric bus capable of adjustment. The internal roll is em loyed as t e driving',-roll.

eferring to the drawings, the rolling apparatus comprises a number of upri hts l, which support a horizontal plate 2. The latter has preferably three radial guides 33, equidistant from one another, for receiving the t; 8 ca ying, by means of bolts the N i 5, and 7. The guiding-slots at. theirouter ends, so as to enable the su oorts to be fitted or removed.

The lower sides of the sup orts are screw-' threaded and by engaging t e s iral thread of an annulus 9 receive a radia. movement from the latter. The annulusQ is preferably secured-bystuds 10to a horizontal face-plate 11, so as to be rotated therewith on turning Patented Nov. 6, iota,

the latter. The guidance of the plate 11 is v effected by means of the dovetailed annular,

pieces 13, secured by studs 12 to theplate 2. The guidance of the plate 11 is further effected by means of a nut 16, secured by a nut 15,-

both of which'are screwed .on a pro'ecting boss 17, integral with the late 2. n the base of the late are a num er of handles 18, so as to enable the plate to be turned and-the su orts to be moved radially.

ithin' the boss 17 is a bush'1'9, formed, preferabl of brass or other suitable material, whic is retained by aflange' 20 in a recess in the boss 17. The b ush 19 has an cecentric bore for receiving ashaft 21, keyed to the internal roll 40. Tli'bush 19 projects from the lower part of the boss 17, so as i to receive a hand-wheel 22, secured by means of screws 23. By rotatin the hand-wheel 22 the eccentricity of the s aft 21 and of the internal roll 40 is altered. The hand-wheel is secured in the desired position by a clampbiock 26, secured by means of the spindle 25, having a handle 24, A lug-27 on the handwheel 22 serves as a nut for the s indie 2.5.

The actuation of the shaftis e ected, preferably, through the intermediary of two universal joints 28 29, between which is a shaft portion 30. Power is transmittedfrom a mo.- tor in the usual Way, the drawings showing bevel-gearing for this purpose.

To secure the plate 11 in position the plate 11 is provided on itsouter cylindrical face with a groove 32, entered'by the heads and stems of two screws 33, which press the block 34 gainst the periphery of the plate 11. A

conical perforation in the block serves to receive fihe point of a pin 35, which, by means of a sma support 36, is secured to the lower side of the plate-2. By withdrawing the pin 35 from the conical perforation the plate 11 is possible. When the desired position is obtained, it is sufficient to press in the pin 35 into the conical perforation in the block 34 in.

order to secure the plate in its desired position.

After the ball-bearing ring it has been made ready for the rollingioperation the same is fitted in the rolling apparatus so that the three external rolls 5, 6, and 7 make contact simultaneousl with its outer face. The number of externa rolls may of course be varied;

but the treble arrangement is preferable, so

' The adas to obtain accurate adiustment. I justment of the externa rolls according to freed, so that a new movement of the plate is the size of the ring is effected by turning the platell, and when the external rolls are in the desired position the inner roll 40 is adjusted to suit by turning hand-wheel 22 until the inner 'roll bears against the inner face of the ring. The position of the internal roll must be such that the same lies radially of one of the three external rolls. The internal roll thus forms the pressure-roll. The oppositely disposed-roll (in the position shown in Fig. 1 the roll 5) forms the counter-pressure roll.

. The rolls 6 and 7 serve as uidea'olls. After the position of the externa and internal rolls has been determined the plate 11 and the hand wheel 22 are secured in the manner described.

The rolling apparatus is set in motion in the usual manner.

According to the height and cross-section of the ring to be treated rolls of different profile may be employed. i For instance, the embodiment shown in Figs. 1 and 2 shows an an- .lular rib on the periphery of each external roll which engages over the material to be rolled, While on the lower part of the internal roll a rib is provided, serving as a support for the mug.

If the supports are not suited for supporting rings of the desired size and form. then,

as well as changing the rolls, the supports carrying the same may also be changed and are removed by slipping them through the en larged ortions oi the slots 3.

1t Wi 1 be seen that according to the invention a double adjustment is provided for.

assess to vary the external diameter, and vice verse, is simply and satisfactorily met. it ispossible by using a single apparatus to produce in minimum time the required number of sites of rings.

Having now described my invention, What [I claim, and desire to secure by Letters Patent of the United States, is

1. The improved apparatus for rolling ballbearing rings, comprislng, in combination, an external counter-pressure roll and a plurality of guide-rolls actin externally of the ring, a

counter-pressure r0 1 engaging the inner face I external counter-pressure roll and a plurality of guide-rolls acting externally of the ring, a pressure-roll engaging the inner face of the ring, a spirally-grooved plate having radial slots for adjusting the external rolls uniformly and simultaneously, a driving-shaft for the internal roll, the upper part of said shaft having a universaljoint connection with the main part of the shaft, a connection between said upper part and the internal roll, and an eccentric bush for said u per part, said bush serving as a means for ad roll independently of the external rolls, substantially as described. y

In testimony whereof I have signed my name to thislspecification in the presence of two subscribing witnesses.

STEFAN SCHNEIDER;

Witnesses HENRY HAsrER, WOLDEMAR HAUPT.

In this way justing the internal 

